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  9. Q2115

RRB Junior Engineer / DMS / CMA 2019 · Question 2115 of 3719

What is the frequency range of ultrasound?

  1. ABelow 20 Hz
  2. BBetween 200 Hz and 2000Hz
  3. CAbove 20 kHzCorrect
  4. DBetween 20 Hz and 20 kHz

Answer: C. Above 20 kHz

Official answer key verified. Detailed explanation coming soon.

Source: RRB JE 2019 CBT-1 (28-May-2019 Shift 1) — cracku.in solved paper with answer key · reliable-secondary

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